Google sends Updated intitation to everyone

For one recurring meeting, that is not created by me, google is sending an updated invitation to everyone 15 mins Before the meeting, same time I get the notification. It started last week. probably after the organizer changed one of the meetings in the series.

I upgraded to 2.2 today but the meeting can have been synced with an earlier version.
Outlook -> google sync only.

Sounds similar to previous issues related to a Google bug which randomly spams all recipients for events. Seeing as this is only affecting a single event for you, have you tried deleting the Google event and letting OGCS recreate it?

If that fails, unfortunately, you may need to stop syncing meeting attendees....